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(12) Patent Application: | (11) CA 2229338 |
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(54) English Title: | VALVE WITH IMPROVED SHAFT RETAINER |
(54) French Title: | BAGUE DE RETENUE AMELIOREE POUR ARBRE DE COMMANDE DE VANNE |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | THOMPSON LAMBERT LLP |
(74) Associate agent: | |
(45) Issued: | |
(22) Filed Date: | 1998-02-12 |
(41) Open to Public Inspection: | 1998-09-25 |
Examination requested: | 2002-11-22 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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A butterfly valve in which a valve body has a
transverse shaft mounted in transverse bores in the valve
body. A disc is mounted on the shaft for opening and
closing the valve. A groove in the shaft receives a ring
that is fastened within one transverse bore, for example
by a cover plate that clamps the ring against a shoulder
in the transverse bore. The ring may be machined to fit
the groove loosely and thus play of the shaft in relation
to the valve body is governed by the amount of play of
the ring in the groove. Bearings on which the shaft is
supported are provided with interior wiper seals, and a
lock is provided for locking the shaft to the valve body
in case of failure of the shaft, for example in case of
failure of the shaft at the disc.
La présente invention a pour objet une vanne à papillon dont le corps est traversé par un arbre de commande transversal monté dans des alésages orientés transversalement par rapport au corps de l'appareil. Un disque plat monté sur l'arbre assure l'obturation ou l'ouverture de la vanne. Une rainure pratiquée sur l'arbre de commande reçoit une bague qui est fixée à l'intérieur d'un alésage transversal par une plaque-couvercle, par exemple, qui retient la bague en la maintenant en appui contre un épaulement à l'intérieur de l'alésage. La bague peut être obtenue par usinage pour un ajustement lâche, ainsi le jeu de l'arbre par rapport au corps de la vanne est fonction du jeu de la bague dans la rainure. Les paliers qui supportent l'arbre de commande comportent des joints racleurs, et un dispositif de verrouillage permet de verrouiller l'arbre de commande par rapport au corps de la vanne en cas de défaillance de l'obturateur.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
2024-08-01:As part of the Next Generation Patents (NGP) transition, the Canadian Patents Database (CPD) now contains a more detailed Event History, which replicates the Event Log of our new back-office solution.
Please note that "Inactive:" events refers to events no longer in use in our new back-office solution.
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Description | Date |
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Inactive: Dead - No reply to s.30(2) Rules requisition | 2006-06-07 |
Application Not Reinstated by Deadline | 2006-06-07 |
Inactive: IPC from MCD | 2006-03-12 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2006-02-13 |
Inactive: Abandoned - No reply to s.30(2) Rules requisition | 2005-06-07 |
Inactive: S.30(2) Rules - Examiner requisition | 2004-12-07 |
Letter Sent | 2003-01-08 |
All Requirements for Examination Determined Compliant | 2002-11-22 |
Request for Examination Received | 2002-11-22 |
Request for Examination Requirements Determined Compliant | 2002-11-22 |
Application Published (Open to Public Inspection) | 1998-09-25 |
Classification Modified | 1998-07-28 |
Inactive: IPC assigned | 1998-07-28 |
Inactive: First IPC assigned | 1998-07-28 |
Inactive: IPC assigned | 1998-07-28 |
Inactive: Filing certificate - No RFE (English) | 1998-05-05 |
Application Received - Regular National | 1998-05-04 |
Abandonment Date | Reason | Reinstatement Date |
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2006-02-13 |
The last payment was received on 2004-11-10
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
Patent Fees
web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Application fee - small | 1998-02-12 | ||
MF (application, 2nd anniv.) - small | 02 | 2000-02-14 | 2000-02-10 |
MF (application, 3rd anniv.) - small | 03 | 2001-02-12 | 2001-01-17 |
MF (application, 4th anniv.) - small | 04 | 2002-02-12 | 2002-02-08 |
Request for examination - small | 2002-11-22 | ||
MF (application, 5th anniv.) - small | 05 | 2003-02-12 | 2002-11-22 |
MF (application, 6th anniv.) - small | 06 | 2004-02-12 | 2003-12-15 |
MF (application, 7th anniv.) - small | 07 | 2005-02-14 | 2004-11-10 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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KURT R. FEIGEL |
Past Owners on Record |
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None |